Ethelbert wareham and william frederick doll



V(No Model.)

E. WAREHAM 8v W. F. DULL.

RING GAGEI No. 438,453. Patented 001;. 14, 1890.

WIT/VESSES: I

UNITED STATES PATENT QEEICE.

ETHELBERT WAREHAM AND WILLIAM FREDERICK DOLL, OFv WINNIPEG, CANADA.

RING-GAG E.

SPECIFICATION forming part of Letters Patent No. 438,453, dated October14, 1890.

Application filed July 3, 1890. Serial No. 357,672. (No model.)

To alZZ whom, it may concern.-

Be it known that we, ETHELBERT VARE- HAM and WILLIAM FREDERICK DOLL,both of Winnipeg, in the Province of Manitoba and Dominion of Canada,have invented a new and Improved Ring-Gage, of which the following is af ull7 clear, and exact description.

This invention relates to adjustable gages or measures for use byjewelers and others for ascertaining the size of fingers when beingfitted with rings, whereby much time is saved and a much more accuratemeasurement effected than by using independent and non-adjustablering-measures of different sizes until one of the right .size is found.These adjustable ring and other like gages have been variouslyconstructed; and our invention consists in an adjustable ring-gage ofsimple and novel construction, substantially as hereinafter described,and more particularly pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specication, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 represents a view in perspective of an adjustable ringgageembodying our invention; Fig. 2,a transverse section thereof, and Fig. 3a section on the line in Fig. 1.

A indicates a hollow drum or thimble like case made of metal or othersuitable material and Vpreferably of tapering form, of convenient sizeto be held by the hand, but of larger transverse dimensions than isabsolutely necessary to it over or receive within it the largest-sizediinger.

B is a spring tape-like measure, which may be made of a piece ofwatch-spring metal and should be of suiiicient length to more than coilaround the largest finger to be measured, and which may have attached toits one end a pull-chain C. This spring tape-measure is riveted orotherwise fastened at its one end b to the inside of the case A, near,say, the largest end of the latter, and in its normal state forms a coilor ring fitting, or nearly so, the interior of the case, while the otherend of said spring-measure passes out through a slot c in the caseadjacent to the fast end of the measure. Said spring-measure has a scaled on its outer side for a portion of its length, the graduations ofwhich correspond with the standard of ring sizes in use among dealersand manufacturers of linger-rings, and its one edge is provided with aseries of notches e opposite said graduations, adapted, by slightlypulling the measure sidewise, to engage with a stop or plate f on theoutside of the case to hold the spring-measure at any one of thegraduations to which it may be adjusted by drawing its free-end portionout of the case. In the application of the ring-gage to a finger to bemeasured the finger is placed 1n the case A and through the coiledportion of the spring-measure B to the joint or place at which thefinger is to be gaged,whenby pulling on the chain C the coiled portionof the spring measure is contracted to form a smaller cylindricalfigure, as shown by full lines in Fig. 1 j

and by dotted lines in Fig. 2, and to close around the finger, the sizeof which will be indicated on the scale d by the extent to which thelatter is drawn out of the case, when the spring-measure may be lockedwith the case by one of the notches e, according to the draft made uponthe measure being made to engage with the plate or slot f. The ring-gagethus indicating the size of the finger measured by it may then beremoved from the finger and a ring. corresponding in size with that ofthe finger and matching with the particular numbered gage-mark indicatedon the spring-measure may be furnished, after which the spring-measureis slightly shifted to one side to disengage itfrom the stop or plate,when it will resume by its elasticity its normal condition, as shown byfull lines in Fig. 2,ready for use again when required.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. In a ring-gage, the combination of the hollow drum or thimble likecase having an opening or slot in its peripheral portion and thegraduated spring tape-like measure secured at its one end to said caseand passing out at its other end through the slot in proximity to thefast end of the measure, the whole being` adapted to receive the fingerWithin the case and through the coiled portion of the measure in thesame, substantiallyas specified.

2. In a ring-gage,the combination of the hollow7 drum or thimble likecase A, havinga Slot c in its peripheral portion, the graduated springtape-like measure B, having a scale cl on its surface and notches e inits edge, secured at its one end to said case and passing' 1o out at itsother end through the slot c in proximity to the fast end of themeasure, and the stop or plate f, with which the notched springemeasureis adapted to engage, essentially as shown and described.

ETHELBERT WAREI-IAM. VILLIAM FREDERICK DOLL.

Witnesses:

THOMAS DAVIS, E. F. GERSTER.

